The unwrapped Tezos that were removed from your wallet likely occurred as a result of a bid or sale you placed on objkt.com. When you place a bid or sale on objkt.com, you are essentially exchanging your Tezos for another cryptocurrency. This process requires your Tezos to be wrapped and sent to the objkt.com wallet. Once the transaction is completed, the objkt.com wallet will then send the wrapped Tezos back to your wallet, along with a transaction fee. This is why you received two Tezos back after the transaction was completed. The transaction fee is to cover the cost of the wrapping and unwrapping process. Therefore, it is likely that the Tezos were removed from your wallet as a result of a bid or sale that you placed on objkt.com.